Latch for vehicle doors



Sept 25 1923. 1,468,954

- s. M. BRADLEY LATCH FOR VEHICLE DOORS Filed May 17. 1921 2 Sheets-Sheet l Sept. 25, 1923.

s. M. BRADLEY LATCH FOR VEHICLE DOORS Filed May 1'? 1921 2 Sheets-Sheet 2 Patented Sept. 2 5, 1223.

SEYMOUR E. BRADLEY, OF NEW HAVEN. CONNECTICUT. ASSIGNOR TO THE ENGLISH &' IKEBSICK 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

Lemon r03 VEHICLE nouns.

Application filed Kay 17, 1921. Serial no. 470.292.

7'0 all whom it may concern:

Be it known that I, SEYMOUR M. BRADLEY, a citizenof the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Latches for V hicle Doors and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in

Fig. 1 a top or plan view of a latch for vehicle doors constructed in accordance with my invention.

Fig. 2 an inside face view of the same, showing the locking-dog in its raised position.

Fig. 3 a similar view, showing the dog in its locked position in full lines and in its unlocked position in broken lines.

Fig. 4 an inside face view, partly in section. of a modified form of latch embodying my invention.

This invention relates to improvement in latches for vehicle doors, and particularly to latches in which the latch-bolt is adapted to be operated from the inside of the door by a swinging lever or by a rotatable lever, and from the outside of the door by means of a suitable handle operating a roll-back having a cam for retiring the latch-bolt, and particularly to latches in which means are provided for engaging with the cam on the roll-back to prevent the operation of the latch-bolt by the outside handle. ltleretw v fore, a pivotal dog has been employed for the purpose of blocking the movement of the cam on the roll-back, and a separate handlehas been provided for operating the dog. The object/of this invention is to directly operate the dog by the movement of the latch-bolt lever, and the invention consists in the construction and arrangement of parts as hereinafter described and particu larly recited in the claims.

In carrying out my invention, I employ the usual latch case plate 5, sliding latch bolt 6 provided with an arm 7 for engagement by a cam 8 on a roll-back 9 adapted to be operated from a suitable handle outside the door, As shown in Figs. 1, 2 and 3 of the drawings, the latch-bolt 6 is operated by a swinginglever 10, all of usual construction.

In the path of the cam 8 I mount a pivotal .dog 11, and pivoted to the lever 10 is a slide 12 havinga slot 13 through which a stud 14, mounted at the top of the dog, extends, the length of the slot being such that when the handle lever 10 is moved forward, as shown in broken lines, Fig. 2, the dog may be turned down into the path of and against the cam 8 as shown in full lines in Fig. 3 of the drawings, so that the cam 8 is locked against movement and prevents the door be ing opened from the outside. The dog 11, which is held in position by a spring-latch 15, is adapted to be raised by verticallymovable slide 16 adapted to be engaged by a roll-back 17 of a cylinder-lock mechanism not shown, the arrangement of the dog and mechanism for raising it by a key being the same as that shown and described in application filed November 29, 1920, Serial Number 427,122. The dog may thus be lifted out of its locking position from the outside by a suitable key, so that the door may opened by the usual outside handle: If the handle-lever 10 be operated from theinside, and moved backward to retire the latch-bolt 6, the first movement of the handle will draw the slide 12 rearward and lift the lockingdog out of its locked position, as shown by broken lines in Fig. 3.

Instead of operating the dog through the medium of a swinging lever, I may employ a construction like that shown and described in an application filed by Kaimer and Rit-ter in even date herewith, in which, as shown in Fig. 4, the latch'bolt is adapted toflbe retired by means or a roll-back 18 and by a cam 19 at the lower end of a vertically-arranged rotatable lever 20. -The roll-back 18 is formedwith a stop-lug 21 arranged to engaged by vertically-movable dog or bolt 22 extending downward through a suitable housing 23 from an arm 24, which is mounted on the, lever 20, the arm being formed with a cam 25 engaged by a pin 26 mounted in the lever, so that, when the lever is turned, the cam 25 will ride over the pin 26 and rest on the arm 24, so as to lift the dog 22 out of engagement. with the stop-lug 21. Around the lever 20 and resting upon the arm 24 is a sleeve 27,"

and this sleeve is coupled by a transverse pin 28 with a push-rod 29 having a. pushbutton 30, which extends upward through a handle lever 31, which is coupled with the spindle 20 and by which the spindle may be then be turned. In this construction,-also, the dog or bolt is lifted out of engagement with the.

jecting lever-handle inside the door for moving the said bolt, a roll-back adapted to be operated from the outside of the door. independent of the said lever, and adap ed to retire the said latch-bolt, a do adapted to engage directly with said 1'0 l-back, and means directly operated by the lever-lmndle for moving the said dog into and out of the path of the said roll-back.

2. In a latch for vehicle doors, the combination with a latch-bolt, of a lever for operating the same, a roll-back by which the latch-bolt may be moved, a dog adapted to be turned into the path of said roll-back, key-operating means for lifting said dog, and connection between the said dog and boltiever, whereby the dog may be moved into or out of its locking position by the movement of the said lever.

otal dog arranged in line with themovement of said rollback, and connections between the dog and latch-bolt lever whereby the dog -may be moved into or out of its locked position by the movement of the said latch-bolt lever.

4. In a latch for vehicle doors, the combination with a latch-bolt and a swinging lever adapted to retire said latch-bolt, a roll-back by which the latch-bolt. may be moved from the outside of the door. a pivotal dog mounted in line with said rollback, and a slide pivoted to the latch-bolt. lever and having slot and pin connection with said dog, whereby said-dog. may be moved into or out of its locked position by the movement of the latch-bolt lever.

in testimony whereof, I have signed this specification in the presence of two subscribmg witnesses.

SEYMOUR M. BRADLEY. W'itnesses MARTHA M. THEISS, RUTH E. BRAnLEY. 

